The original bows had cast risers, and had the 15-45# adjustable weight. I think there were 2 cam systems available. The one my son had was from 22-27, I believe. The newer MM2 and MM3 bows had the 10# adjustment, and 10" of draw length adjustment 18-28"). We bought a Diamond Razor's Edge for the boy this year, so the MM is no longer being used. If you are interested, PM for info or pics. I will check the draw length range, but I think it is 22-27.